Sr Engineer System Design

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Sr Engineer, Systems Design

If you are a sharp, experienced engineer with strong problem-solving skills, a solid quality testing foundation, talented, detail oriented and enthusiastic and also who is passionate about quality of the new technologies that are offered to consumers, then this job is for you. You will design, plan, execute tests for software release across multiple nodes E2E using a variety of end user customer devices to validate the platform. Quality Engineering team will drive efficiencies in the QA process and invest appropriately in process changes, better quality methodologies / strategies to test efficiently and release features with quality to customer. Technical documentation and presentation skills are required in order to convey design benefits to a wide range of audiences. Works on technical assignments that are moderately difficult, requiring judgment in resolving issues or in making recommendations. Works on assignments requiring considerable judgment and initiative. Understands implications of work and makes recommendations for solutions. Normally receives little instruction on daily work, general instructions on newly introduced assignments.

What you'll do in your role.

What you'll do in your role.
The System Design Engineer's role is to do planning of test case management, validate and deploy test strategies and solutions to test and release applications in T-Mobile network and systems. Specific tasks may include the development and maintenance of designs for the lab/staging network, applications, connectivity, validation plans, monitoring, automation & reporting systems using engineering tools. Applications will be tested in T-Mobile's network and will involve working with multiple stakeholders like development, product and Operations teams. Sr.Engineer will be responsible for conducting on various test flows (Functional, System, Interoperability, Load ,Stress, Security) with good debugging skills and log analysis and defect reporting. Sr.Engineer will work closely with the development, Operations and vendor groups that enhance and maintain the applications that make up the product and the underlying services that drive them.

The experience you'll bring.

The experience you'll bring.
Qualifications Required
  • 5+ years’ experience with strong background in Wireless, telecommunication technologies like IMS, RCS, EPC, VoLTE, ViLTE and relevant protocols
  • 5+ years’ experience of IP Multimedia Subsystem and Services (IMS) including Rich Communication Services (RCS), WebRTC communications
  • Must and have good working knowledge of TCP/IP,SIP,RTP,DIAMETER,HTTP,WebRTC, Video Conferencing
  • Experience in SDN/NFV/ ETSI architecture is desired.
  • Deep technical acumen and ability to deliver demos or present technical updates
  • Good working experience on Demonstrable understanding of design/implementation and test execution of any large-scale enterprise networks.
  • Good working knowledge on RESTful API web services of applications in modern waterfall and/or agile SDLCs.
  • 3+ years of working Experience on Load/Stress Test related to IMS Applications,
  • Working experience in building and integration of monitoring tools for day-to-day validation activities
  • Proficiency in documentation and troubleshooting tech toolchains (e.g. Visio, Confluence, JIRA, Rally, Wireshark, SoapUI)
  • Experience with test design, test strategy, test plan and test execution of the applications
  • Experience with developing and executing test cases for functional, integration performance and stress testing
  • Self-motivated and ability to work well under pressure with Debugging and problem-solving skills in mobile platforms
  • Must have good interpersonal skills and be able to build consensus across teams.

Minimum Required
  • Bachelor’s Degree. Engineering/Computer Science/Telecommunications

License or Certification
General/Physical Requirements
Must be able to communicate with others effectively through written communication methods. Must be able to communicate (talking, hearing, etc.) with others effectively through oral communication methods. This position requires working with a computer (k

T-Mobile US, Inc. offers a full range of comprehensive benefits, including medical, dental, vision, as well as matching 401(k), generous paid time off programs, phone service discounts, tuition reimbursement, free parking - not to mention a fun and business casual work environment.

T-Mobile US, Inc. is an equal opportunity employer (EOE). We strongly support diversity in the workforce.

Network Technology
Position details

Req ID: 134315BR

Department: Engineering

Travel Required: No

Position(s) remaining: 1

Position posted for
3 days

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What's it like to work at T-Mobile? Find out.

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Current Senior Technician in Rowlett, TX


Laid back, easy going, very relaxed and opportunities for advancement and career enhancement if the individual applies him/herself. They INSIST on a healthy work-life balance. And the CEO is entertaining and has done amazing things for the company.


They really like to promote from within, which is great, if you're "in", but it can be incredibly difficult to get in. Pay can be a little on the low end of the scale, but benefits are great.

Advice to Management

Make sure that everyone on the teams are pulling their share of the weight; policies come out because of the intermittent 'bad apple'

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Current Business Analyst in Bellevue, WA


There are many good reasons to work for T-Mobile. Discounted phone bill, discount towards accessories, and good benefits package to name a few. The company is growing and will soon be in the hunt for the top spot in the telecommunication world.


Just like other large corporate environments, its not what you know its who you know in order to advance your career further. Pay is fair could be better.

Advice to Management

Stop managing and be leaders! Listen to your employees, be proactive in identifying issues rather than ignoring them.

Equal Employment Opportunity

As America’s Un-carrier, T-Mobile USA, Inc. (NASDAQ: “TMUS”) is redefining the way consumers and businesses buy wireless services through leading product and service innovation. The company’s advanced nationwide 4G and 4G LTE network delivers outstanding wireless experiences for customers who are unwilling to compromise on quality and value. Based in Bellevue, Washington, T-Mobile USA. Inc. provides services through its subsidiaries and operates its flagship brands, T-Mobile and Metro by T-Mobile. For more information, please visit

EOE Statement